[mel-base-devel] please update mel-base

[Yubao Liu]

Hi,

The mel-base package shipped by quicklisp is very old as quicklisp use
deprecated darcs
repository, the mel-base developers have switched to git:
    http://common-lisp.net/project/mel-base/mel-base.git
I find this link from http://common-lisp.net/project/mel-base/ to
http://pmeta.net/projects/mel-base/.

Hi Jochen, could you fix the common-lisp.net page? The download link
is dead and the darcs link
should be replaced with a link to git repository.